RBS, Commerzbank and Standard Bank are suing Dubai Group for the immediate repayment of loans...

RBS, Commerzbank and Standard Bank are suing Dubai Group for the immediate repayment of loans after withdrawing from talks to restructure the holding company's $10B debt three months ago. It's an unusual move given that banks tend to take the best terms they can get with the emirate, especially as the group is owned by Dubai ruler Sheikh Mohammed bin Rashid al Maktoum.